Lily with her brother Alfie who's an actor, you can see him in 'Atonement', 'Elizabeth' or 'The Other Boleyn girl' and Lily has talked about his penis. Yeah, his brother's penis:

"He's got a huge penis. When I lived at home, Alfie's room was opposite the main bathroom, and I would often be in the bath in the morning and it never had a lock on the door and Alfie would get up with his morning boner and come in for a wee while I was in the bath and I'd just be like: 'That is the most disgusting thing I have ever seen!' I'd be like 'ALFIE! Stop it!' He'd even poo in front of me a couple of times, it's disgusting. He's got no respect, that Alfie. I'd never poo in front of my brother, never! Wee, yes definitely."